> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of JaniD++
> Sent: Sunday, December 18, 2005 3:09 PM
> To: [email protected]
> Subject: buffer cache question
>
> Hello, list,
>
> I use 4 disk nodes with NBD.
> All of my nodes have 2GB ram.
>
> But the buffer cache newer rise over 830MB.
>
> Is there some limit?
For writes only 40% of the ram can be "dirty".
> Where can i change this limit? (if it is)
I believe there is a way to change it, I am pretty sure that it has
been discussed on the kernel list a couple of months ago, I
don't remember exactly what the change is, and I think the change
was more complicated that was obvious.
The previous subject on a similar thing was:
"kernel 2.6.13 buffer strangeness"
Roger
>
> Thanks,
> Janos
>
> [root@st-0001 root]# free
> total used free shared
> buffers cached
> Mem: 2073152 933188 1139964 0
> 836776 43416
> -/+ buffers/cache: 52996 2020156
> Swap: 0 0 0
> [root@st-0001 root]# cat /proc/meminfo
> MemTotal: 2073152 kB
> MemFree: 1139012 kB
> Buffers: 835928 kB
> Cached: 43448 kB
> SwapCached: 0 kB
> Active: 12872 kB
> Inactive: 871424 kB
> HighTotal: 1179584 kB
> HighFree: 1129764 kB
> LowTotal: 893568 kB
> LowFree: 9248 kB
> SwapTotal: 0 kB
> SwapFree: 0 kB
> Dirty: 0 kB
> Writeback: 0 kB
> Mapped: 9104 kB
> Slab: 30248 kB
> CommitLimit: 1036576 kB
> Committed_AS: 15428 kB
> PageTables: 408 kB
> VmallocTotal: 114680 kB
> VmallocUsed: 196 kB
> VmallocChunk: 114476 kB
> [root@st-0001 root]#
>
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